/**
    * This file Copyright (c) 2018 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.ui.contentapp;
  
  import info.magnolia.ui.api.i18n.I18NAuthoringSupport;
  import info.magnolia.ui.databinding.JcrItemPropertySet;
  import info.magnolia.ui.field.FieldDefinition;
  import info.magnolia.ui.framework.datasource.components.PropertySetFactory;
  
  import java.util.Collection;
  import java.util.List;
  import java.util.Locale;
  import java.util.Map;
  import java.util.Optional;
  import java.util.function.Function;
  import java.util.stream.Collectors;
  
  import javax.inject.Inject;
  import javax.jcr.Item;
  
  import com.vaadin.data.PropertySet;
  
  /**
   * {@link PropertySet PropertySet} factory which yields JCR-specific implementations.
   */
  public class JcrPropertySetFactory implements PropertySetFactory<Item> {
  
      private final I18NAuthoringSupport i18NAuthoringSupport;
  
      @Inject
      public JcrPropertySetFactory(I18NAuthoringSupport i18NAuthoringSupport) {
          this.i18NAuthoringSupport = i18NAuthoringSupport;
      }
  
      @Override
      public PropertySet<Item> withProperties(Map<String, Class> properties) {
          final List<JcrItemPropertySet.JcrPropertyDescriptor> propertyDescriptors = properties.entrySet().stream()
                  .map(entry -> JcrItemPropertySet.JcrPropertyDescriptor.builder()
                          .type(entry.getValue())
                          .name(entry.getKey())
                          .build())
                  .collect(Collectors.toList());
  
          return new JcrItemPropertySet(propertyDescriptors);
      }
  
      @Override
      public PropertySet<Item> fromFieldDefinitions(Collection<FieldDefinition> fieldDefinitions, Locale locale) {
          final List<JcrItemPropertySet.JcrPropertyDescriptor> propertyDefinitions = fieldDefinitions.stream()
                  .map(fieldDefinition -> JcrItemPropertySet.JcrPropertyDescriptor
                          .builder()
                          .name(getI18nNameProvider(locale).apply(fieldDefinition))
                          .type(fieldDefinition.getType())
                          .build())
                  .collect(Collectors.toList());
  
          return new JcrItemPropertySet(propertyDefinitions);
      }
  
      private Function<FieldDefinition<Item>, String> getI18nNameProvider(Locale locale) {
          return fieldDefinition ->
                  Optional.ofNullable(locale)
                          .filter(l -> !i18NAuthoringSupport.isDefaultLocale(locale))
                          .filter(l -> fieldDefinition.isI18n())
                          .map(l -> i18NAuthoringSupport.deriveLocalisedPropertyName(fieldDefinition.getName(), locale))
                          .orElse(fieldDefinition.getName());
      }
  }